Author Topic: VDO Speedo. I did it!! pictures  (Read 13491 times)

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
VDO Speedo. I did it!! pictures
« on: October 17, 2009, 05:33:30 PM »
Hi:
2002 Stone.
I installed a new VDO speedo today. I used a GM sender, which I purchased from Ebay for 19.00. Everything works firne, the test passes, the needle moves and the odo works. But I need to calibrate it.

Can someone tell me how to use the pulse method to calibrate. The GM sender gives 16 pulses.

http://s81.photobucket.com/albums/j208/rolls77/humidor%20bose/

M Khan
« Last Edit: July 13, 2010, 09:39:29 PM by mkmd555 »

Offline PeteS

  • Guzzi Hero
  • *****
  • Posts: 1961
Re: VDO Speedo. I did it!! pictures
« Reply #1 on: October 17, 2009, 05:38:18 PM »
What drives the GM sender?

Pete

Offline rocker59

  • Guzzi Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 18787
  • "diplomatico di moto"
Re: VDO Speedo. I did it!! pictures
« Reply #2 on: October 17, 2009, 05:39:54 PM »
Cool!

I'd like to know more about this GM sender and how it works on the MG tranny.

Next time my ITI speedo takes a dump, I'd like to do something different...

More info, please!
Michael T.
Aux Arcs
1996 Moto Guzzi Sport 1100
"Do what you can, with what you have, where you are." - Theodore Roosevelt

Offline Sheepdog

  • Guzzi Hero
  • *****
  • *
  • *
  • *
  • Posts: 3231
  • '07 California Vintage & '03 Triumph T100
Re: VDO Speedo. I did it!! pictures
« Reply #3 on: October 17, 2009, 05:49:44 PM »
Very cool.  I've got a VDO clock and voltmeter that I'd like to mount on my Vintage, but haven't quite figured out where to place them.  I don't have buckets, so its gonna take some doing...
"I'd rather be ashes than dust..."

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #4 on: October 17, 2009, 07:09:28 PM »
Thanks for asking what drives the sender.

The part that drives the original speedo cable will drive the GM sender.

Here is how to do it. Uninstall the speedo cable from the tranny.You will discover a small speedo driver with a hole in it (female part). Sit the sender over this driver ensuring that the sender's key (male part) enter the hole. Luckily the senders driver key is .104" which fits the MG tranny female driver part.

True, the sender will not screw like the original cable. But fortuitously, the size of the sender and the space around it is just perfect, so it will sit there, tightly in place. You will have to make some room by wiggling on the wiring and the 2 hoses which go to the canister.

I rode the bike today. No oil leaks. The sender sits there.

When I received the sender it looked too big to fit. But, I thought I might just give it a try. It worked ; sometimes you get lucky!



M Khan
« Last Edit: October 18, 2009, 08:33:38 PM by mkmd555 »

Offline owassojoe

  • Guzzi Hero
  • *****
  • *
  • Posts: 1413
Re: VDO Speedo. I did it!! pictures
« Reply #5 on: October 17, 2009, 07:16:34 PM »
The instructions for putting the speedometer in calibrate mode came with it.  It's just turning the key on while holding down the button, then push the button until "cal" is shown.  Take the bike to wherever you can do a measured mile.  Use another vehicle, a gps, or section lines.  Push the button and start driving.  Stop after exactly 1 mile, push the button again and you're done.

Easy.

« Last Edit: October 17, 2009, 08:48:05 PM by owassojoe »
'03 EV Touring
*Taller Clearview shield
*BMW power outlet
*Harper's Grip Heaters and Outsider
*Fiamm "Freeway Blaster" horns
*LED turn signals
*Valve upgrade done by MPH at 14,800
*AdvanceMoto brake pedal
*Harley Air Shocks
*32 K  miles
*VDO Electronic Speedometer @ about 23K
*K/Q Seat

Offline FASTFREDDY

  • Weekend Warrior
  • ***
  • Posts: 184
Re: VDO Speedo. I did it!! pictures
« Reply #6 on: October 17, 2009, 07:54:13 PM »

Looks nice! I installed a Dakota Digital dash on my Jackal much the same way. Used a speed sensor also.
Donne i Motori, Gioia i Dolore!

Offline Hacksaw

  • Guzzi Hero
  • *****
  • Posts: 3377
Re: VDO Speedo. I did it!! pictures
« Reply #7 on: October 17, 2009, 08:21:34 PM »
With the sender just sitting over the speedometer cable connection isn't that a source for water to get inside the tranny??
Y'all Ride Safe Out There Now Ya Hear,
Hacksaw

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #8 on: October 17, 2009, 09:32:24 PM »
With the sender just sitting over the speedometer cable connection isn't that a source for water to get inside the tranny??


Water, I am certain, cannot penetrate into the tranny because the tranny is still sealed by the original driver (female), which protrudes at least 2 cm above the tranny.

M Khan

Offline Zoom Zoom

  • Guzzi Hero
  • *****
  • *
  • Posts: 8146
  • Northeast Ohio
Re: VDO Speedo. I did it!! pictures
« Reply #9 on: October 18, 2009, 08:50:14 AM »
Very nice!

Just a thought here: you could even tap a small hole in the side of the sender and put a set screw in there to insure it staying in place.

Question: Is the VDO unit designed for motorcycle use? ie: is it going to be bad to get wet? Also, were you able to reuse the original gauge cover underneath or what did you come up with?

Zoom Zoom,
John Henry

Another question: Did it fit the hole in the mounting bracket?
« Last Edit: October 18, 2009, 09:32:51 AM by Zoom Zoom »
A wide, unfettered road ahead,
and the flying motor singing.
Samuel C. Lancaster 1921

Offline Orange Guzzi

  • Guzzi Hero
  • *****
  • Posts: 1416
Re: VDO Speedo. I did it!! pictures
« Reply #10 on: October 18, 2009, 10:25:58 AM »
i used the original chrome cover.  had to drill a hole to run the wires through. used the original coupling nut and screw to hold the cover in place.  

what you need to do is measure the circumference of the rear wheel.  divide 1 mile by the circumference.  you need to know how many revolutions the original cable made per one wheel revolution.  


1 mile = 5280 feet
5280 x 12 = 63480 inches per mile
outside tire diameter:24 inches x pi (3.14159) = 75.4 inches
63480 / 75.4 = 841.9 revolutions per mile.
16 pulse per revolutions x 841.9 = 13470 pulses

i suspect the original cable turns 4 or 5 times per each complete rear wheel revolutions.
you need to rotate the rear wheel and watch the original cable connection to see how may times it makes a complete rotation for 1 complete rear wheel rotation.  multiply that number times 13,470 pulses.
this will give you the total number of pulses the speedo will get in 1 mile distance.  this is just an example and will get you close.  you will have to ride and measure the accuracy.  remember a pulse is only a few inches of travel.  based on sample calculations, a pulse signal is only 4.7 inches, so if you are off 100 feet in a mile, you will have to make a large change to  the number of pulses.  

in my previous post, i use 3 magnets in my rear brake rotor.  this gave me only three pulses per 1 wheel revolutions.  this is significantly less pulses then you will get with your set up (you will probably get 80 pulses per 1 wheel revolution).  your setup will be more accurate.  
the first number on the right cannot be changed.

2. Manual Calibration with a known value
(pulse )
If you know the exact calibration value for the vehicle and
type of sensor you are using (pulse-per-mile or pulse-perkilometer),
you may use that value to manually calibrate the
speedometer.
To calibrate your VDO Speedometer manually:
1. Press and hold in the button on the front of the speedometer
as you turn on the ignition. Hold in the button until
the word pulse pulse is displayed on the LCD readout.  

  2. As soon as you see the word pulse , release the
button. After a few seconds, the display will start flashing a
series of numbers (factory default setting) that you can
change to represent the correct calibration impulse value.
For example, a number like 50000 will show on the display,
with each digit flashing in turn, except for the last digit on
the right, which is fixed: first, the second 0 from the right;
then the third 0 from the right; then, the next 0; and finally,
the 5.
3. As each number flashes, press the button to change it
until the correct digit appears (that is, the number you wish
to input).
For example, lets say the number that represents the correct
calibration value for your vehicle and sensor is 43850.
When you begin the manual calibration process, the LCD
displays a default value. Each digit, except the one farthest
to the right, will flash, in turn, from right to left. Wait until
the second digit from the right starts to flash again. When it
does, press the button to start cycling through the numbers
available for this digit. When the number 5 appears, release
thAt this point, the number 5 is set, and the digit to its immediate
left begins to flash the middle digit. Press the
button again, and hold it until the number 8 appears. Release
the button. Now, the second digit from the left begins
to flash. Again, hold in the button until the number 3
appears. When it does, all but the left-lmost digit are set.
Repeat the process to set the 4 and the value in our example
is set. The value 43850 should be displayed on the
LCD readout.
4. When you are satisfied you have properly entered the
correct calibration value when that value is displayed on
the LCD readout take your finger off the button and wait.
After a few seconds, the value you have entered will be downloaded
into the speedometers microprocessor, and the speedometer
will revert back to normal operating mode. At this
point, the manual calibration process is complete.
In the future, you can use this method to update the calibration
value stored in the computer should it ever become
necessary. This function also allows you to manually adjust
the calibration value after you perform the automatic calibration
process.

if the odometer is reading short on a mile, you will need less pulses, and more if it is reading over on a mile.

i got mine within 1 mile on a 100 mile ride compared to another bike and the mile markers on I-65. <divclass="msgbox">Nofilesuploaded!</div>

« Last Edit: October 18, 2009, 03:24:56 PM by Orange Guzzi »
1975 850 t3
1979 SP aka ORANGE GUZZI
1975 CONVERT POLICE
1996 SPORT 1100
2003 ALUMINUM

Offline gargoyle

  • Guzzi Mentor
  • ****
  • Posts: 426
Re: VDO Speedo. I did it!! pictures
« Reply #11 on: October 18, 2009, 11:36:11 AM »
What happened to the :PICS!: ???
04 Nero LeMans
09 Can Am Spyder RS
02 Silver Concours

Offline oldmanjob

  • Guzzi Hero
  • *****
  • Posts: 2652
  • MGNOC 21633
Re: VDO Speedo. I did it!! pictures
« Reply #12 on: October 18, 2009, 01:03:12 PM »
Obama has to clear them first :o ;D
A free lunch is only found in a mouse trap - Mickey M 
Dana NC
V7C
2003 100th Anniversary 883 Hugger Sportster (sold finally)
2006 Black Bonneville (790) residing in Bonnie Heaven.
John 14:6-7 KJV.

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #13 on: October 18, 2009, 03:41:49 PM »
Very nice!

Just a thought here: you could even tap a small hole in the side of the sender and put a set screw in there to insure it staying in place.

Zoom Zoom:
I appreciate your ingenuity, in fact I'll drilla hole and make the dender more secure.
Answer to your first Q. Is the VDO unit designed for motorcycle use? ie: is it going to be bad to get wet?"

VDO is designed for vehicles. It will work on Motorcycles because it is  sealed against moisture and even ozone.

2nd Q: "Also, were you able to reuse the original gauge cover underneath or what did you come up with?"

Answer: Yes the original guage cover fits perfectly because the size is 3 1/8.

3 rd Q: " Did it fit the hole in the mounting bracket?

Answer: Yes. As the pictures demonstrate, it is a perfect fit.

Sincerely,

M Khan


Offline HOSS

  • Weekend Warrior
  • ***
  • *
  • Posts: 175
Re: VDO Speedo. I did it!! pictures
« Reply #14 on: October 18, 2009, 05:18:26 PM »
Since my iti crapped out this summer I would love to do this.  Is there any way you can repost the pictures to photobucket so those that missed them can see them.  Thanks, HOSS

Offline WP2

  • Guzzi Mentor
  • ****
  • *
  • *
  • *
  • *
  • *
  • Posts: 295
Re: VDO Speedo. I did it!! pictures
« Reply #15 on: October 18, 2009, 06:26:10 PM »
Since my iti crapped out this summer I would love to do this.  Is there any way you can repost the pictures to photobucket so those that missed them can see them.  Thanks, HOSS

Please do the Photobucket thing - I think many of us are in the same boat as HOSS and it's getting time for our winter projects.

Thanks.

Walt
'02 Stone
'03 EVT
Jenison, Michigan
MGNOC - AMA

Offline rboe

  • Guzzi Hero
  • *****
  • *
  • *
  • Posts: 4294
Re: VDO Speedo. I did it!! pictures
« Reply #16 on: October 18, 2009, 07:23:45 PM »
Unless you pay photobucket we have seen problems with photobucket in the past deleting pictures so we're not completely happy with them either. Paid accounts have not seen the problem.
Phoenix, AZ
2000 Quota 1100 ES Black (sold & gone)
2008 Honda XR650L
2012 Griso SE
2013 Honda CB1100

Offline PeteS

  • Guzzi Hero
  • *****
  • Posts: 1961
Re: VDO Speedo. I did it!! pictures
« Reply #17 on: October 18, 2009, 08:12:24 PM »
This looks like it will work with my Autometer gauge. Do you have the part number or application for the GM sender? Thanks for posting this.

Could this be the same one you used: http://cgi.ebay.com/ebaymotors/Cyberdyne-8901-Sending-Unit-Speedometer-Most-GM-Each_W0QQcmdZViewItemQQhashZitem56363a30d4QQitemZ370276970708QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories#ht_2951wt_898

Pete
« Last Edit: October 18, 2009, 08:18:44 PM by PeteS »

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #18 on: October 18, 2009, 08:30:43 PM »
Ebay still offers the GM sender, which has 16 puses, as mine does. This guy ships fast, but charges 7.50 . In any case, the product is solid.

http://cgi.ebay.com/ebaymotors/New-speedometer-sender-GM-pulse-generator-Hall-effect_W0QQcmdZViewItemQQhashZitem3a531b5bf8QQitemZ250502405112QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories#ht_500wt_1182

M Khan

Offline HOSS

  • Weekend Warrior
  • ***
  • *
  • Posts: 175
Re: VDO Speedo. I did it!! pictures
« Reply #19 on: October 19, 2009, 04:12:07 PM »
Thanks for redoing the pictures :) ;-T

Offline krglorioso

  • Guzzi Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 1101
Re: VDO Speedo. I did it!! pictures
« Reply #20 on: October 19, 2009, 05:15:43 PM »
Thanks for redoing the pictures :) ;-T

Thanks, M. Kahn.  You've done a superb job and an equally fine service to us owners of Guzzis with the fragile ITI speedometer/odometer instrument.

Ralph
Ralph

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #21 on: October 19, 2009, 07:15:20 PM »
Hi all:

I really enjoyed this mini project. It is really a simple winter project which should not take more than a Saturday. The most joyous aspect of this project was the serependitious discovery of the GM sender; this sender was made for Guzzi!

I was thinking of installing Walmart/Target bycycle sender, but decided against it because it would mar the bike's beauty.

Today I calibrated the speedo using a TomTom. The readings came out to be DEAD accurate.  I couldn't help myself keep  my eyes off, admiring the beautiful speedo, rather than than paying attention to the fall colors and traffic. A small victory.

In summary: eguages.com sell the VDO. Get a VDO cockpit, 120 miles, 3 1/8. The sender came from Ebay for 19.00

Regards as always,

M Khan

Offline Zoom Zoom

  • Guzzi Hero
  • *****
  • *
  • Posts: 8146
  • Northeast Ohio
Re: VDO Speedo. I did it!! pictures
« Reply #22 on: October 21, 2009, 06:16:44 PM »
Well, I decided to pick up one of those senders in case I decided to do something along the line of your change.

Question: 3 wires on the sender, Black/White/Red. Is the red and black power and ground with the white being the control lead to the tach?

It may be some time before I do this and I wanted to mark on the box. Also, I have a friend, whose brother is a GM makanak. I'll see if I can get a specific application and part number for this unit.

Zoom Zoom,
John Henry
A wide, unfettered road ahead,
and the flying motor singing.
Samuel C. Lancaster 1921

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #23 on: October 21, 2009, 06:27:47 PM »
Zoom Zoom:

black is ground, red is 12 volts and white is signal. egauges has a pdf with easy instructions:

http://www.egauges.com/pdf/vdo/0-515-012-051.pdf

M Khan

Offline PeteS

  • Guzzi Hero
  • *****
  • Posts: 1961
Re: VDO Speedo. I did it!! pictures
« Reply #24 on: October 21, 2009, 06:36:33 PM »
M.K., I received the sender today. Thanks again for the tip! I thought I was going to have make my own sending unit picking up marks on the rear wheel hub but this will be so much easier.

Pete

Offline Zoom Zoom

  • Guzzi Hero
  • *****
  • *
  • Posts: 8146
  • Northeast Ohio
Re: VDO Speedo. I did it!! pictures
« Reply #25 on: October 22, 2009, 05:14:12 AM »
Zoom Zoom:

black is ground, red is 12 volts and white is signal. egauges has a pdf with easy instructions:

http://www.egauges.com/pdf/vdo/0-515-012-051.pdf

M Khan

Thanks, that is what I figured. I knew the gauges would have instructions. I just wanted to verify the leads coming off the sender. Thanks again.

Zoom Zoom,
John Henry
A wide, unfettered road ahead,
and the flying motor singing.
Samuel C. Lancaster 1921

Offline Goose

  • Guzzi Hero
  • *****
  • *
  • *
  • Posts: 13294
Re: VDO Speedo. I did it!! pictures
« Reply #26 on: October 22, 2009, 01:07:13 PM »
If there is anough space, could a threadded adapter be fabricated to allow the GM sender to actually screw onto the transmission?

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #27 on: October 22, 2009, 02:16:06 PM »
If there is anough space, could a threadded adapter be fabricated to allow the GM sender to actually screw onto the transmission?

Yes. there is enough space to fit a  fabricated  adapter. The senders dia is approx 1.25 inch, while the driver's diameter is approx 1 cm.

I thought it was a good solution, but I do not have the know how or the tools to fabricate such an adapter.

M Khan


Offline Zoom Zoom

  • Guzzi Hero
  • *****
  • *
  • Posts: 8146
  • Northeast Ohio
Re: VDO Speedo. I did it!! pictures
« Reply #28 on: October 22, 2009, 05:30:03 PM »
Gary, another consideration with doing that would be that the square drive cable would not be long enough to reach into the transmission if there were an adapter in the mix. If it seems to fit snugly as is, why fight it. As I suggested, drill and tap the body of the sender and install a set screw in there. Cheap and easy.

Zoom Zoom,
John Henry
A wide, unfettered road ahead,
and the flying motor singing.
Samuel C. Lancaster 1921

Offline mkmd555

  • Weekend Warrior
  • ***
  • Posts: 125
Re: VDO Speedo. I did it!! pictures
« Reply #29 on: October 22, 2009, 09:00:18 PM »
As I suggested, drill and tap the body of the sender and install a set screw in there. Cheap and easy.

Zoom Zoom,
John Henry

My only concern with the set screw is that it will create an angle between the key and the female part in the  driver. As a result of the angle the key can wear out prematurely. ( Senders diameter is more than an inch, while the drivers diameter is approx a cm.)

It is truly a snug fit which works fine, but it is also true that you get a feeling of something missing, something not done right, something left incomplete: sloppy.

But the contraption works accurately.

An adapter, if one can be fabricated, would be a very good solution.

M Khan

fin-design.com
A neat little tool for Guzzis. Free shipping
http://www.fin-design.com
Advertise Here
 


Staccatocycle.com
Eni/Agip Engine & Gear Oils & Coolants
staccatocycle.com
Advertise Here